| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cassandra.cql3; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.Objects; |
| |
| import org.apache.cassandra.db.marshal.AbstractType; |
| import org.apache.cassandra.db.marshal.ReversedType; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| public class ColumnSpecification |
| { |
| public final String ksName; |
| public final String cfName; |
| public final ColumnIdentifier name; |
| public final AbstractType<?> type; |
| |
| public ColumnSpecification(String ksName, String cfName, ColumnIdentifier name, AbstractType<?> type) |
| { |
| this.ksName = ksName; |
| this.cfName = cfName; |
| this.name = name; |
| this.type = type; |
| } |
| |
| /** |
| * Returns a new <code>ColumnSpecification</code> for the same column but with the specified alias. |
| * |
| * @param alias the column alias |
| * @return a new <code>ColumnSpecification</code> for the same column but with the specified alias. |
| */ |
| public ColumnSpecification withAlias(ColumnIdentifier alias) |
| { |
| return new ColumnSpecification(ksName, cfName, alias, type); |
| } |
| |
| public boolean isReversedType() |
| { |
| return type instanceof ReversedType; |
| } |
| |
| /** |
| * Returns true if all ColumnSpecifications are in the same table, false otherwise. |
| */ |
| public static boolean allInSameTable(Collection<ColumnSpecification> names) |
| { |
| if (names == null || names.isEmpty()) |
| return false; |
| |
| Iterator<ColumnSpecification> iter = names.iterator(); |
| ColumnSpecification first = iter.next(); |
| while (iter.hasNext()) |
| { |
| ColumnSpecification name = iter.next(); |
| if (!name.ksName.equals(first.ksName) || !name.cfName.equals(first.cfName)) |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public boolean equals(Object other) |
| { |
| if (!(other instanceof ColumnSpecification)) |
| return false; |
| |
| ColumnSpecification that = (ColumnSpecification) other; |
| return this.ksName.equals(that.ksName) && |
| this.cfName.equals(that.cfName) && |
| this.name.equals(that.name) && |
| this.type.equals(that.type); |
| } |
| |
| public int hashCode() |
| { |
| return Objects.hashCode(ksName, cfName, name, type); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return MoreObjects.toStringHelper(this) |
| .add("name", name) |
| .add("type", type) |
| .toString(); |
| } |
| } |